Biological and nature-based treatment solutions, from ETP and STP design through technology selection, supply and commissioning.
Industries across Pakistan face mounting EPA pressure, NEQS enforcement and community expectations. Untreated effluent is costing businesses penalties, shutdowns and reputational damage.
Critical GREEN designs treatment systems that achieve NEQS compliance, protect EPA licences, and reduce operational risk — for sugar mills, textile units, food processors, housing societies and municipalities.
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From feasibility and design through supply, construction, commissioning and operations — complete wastewater treatment solutions built for Pakistan's regulatory environment.

UASB, IC Reactor and ABR systems for high-strength industrial wastewater. COD removal 60–80% with biogas energy recovery. For sugar mills, distilleries and food processing.

SBR, MBR and BAF systems for biological COD/BOD removal. MBR produces TSS <5 mg/L suitable for effluent reuse. For municipal, pharmaceutical and food applications.

CAV-DAF, DAF and SAF systems for TSS, fats, oils and grease removal. Essential pre-treatment for textile, edible oil, food processing and car wash effluent.

HSSF, VSSF, FWS and FTW nature-based systems for sustainable, low-energy treatment. Ideal for housing societies, sugar mill polishing and municipal applications.

IEE, EIA, EMS, Environmental Audits, SEA and water quality testing. Full regulatory approval support from initial assessment to EPA submission and compliance monitoring.

CG ERP and CG Enviro App — enterprise software built by Critical GREEN for environmental firms. Project management, NEQS compliance tracking, environmental monitoring.
Different industries produce different wastewater. We engineer the right system for each — from high-strength distillery effluent to domestic sewage from housing societies.
Industrial ETPs, municipal STPs, housing society sewage systems, and community WASH interventions — Critical GREEN has delivered across Punjab, Sindh, KPK, Balochistan and Azad Jammu & Kashmir.
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UASB to constructed wetlands — we select the right technology for your effluent, budget and site.
All systems designed to meet NEQS standards. We handle EPA approval documentation and monitoring.
Designed for Pakistani industrial flows, water characteristics, climate and EPA regulatory frameworks.
Beyond industrial clients, Critical GREEN has delivered community-based WASH and environmental interventions across Pakistan — household-level constructed wetlands, decentralised sanitation and nature-based solutions through development-sector programmes.
Tell us your industry, approximate daily flow and location. We will prepare a free preliminary technical proposal within 48 hours.